[Mobile] IN PROGRESS: Overlay and form cleanups

open #74
Widths and layout strategy fixed for label and
controls in form when appearing in mobile;
Overlay margins adjusted;
Cleaned up font size, line-height in tree items;

platform/commonUI/general/res/sass/controls/_controls.scss

@@ -198,7 +198,7 @@ label.checkbox.custom {
 	margin-right: $interiorMargin * 4;
 	padding-left: $d + $interiorMargin;
 	position: relative;
-	vertical-align: top;
+	vertical-align: middle; // was top
 	em {
 		color: $colorBodyFg;
 		display: inline-block;